File 0002-Fix-media_fs_uuids-not-being-initialized-with-existi.patch of Package thunar
From c52ed176e69f0ecbe5f795ce6bd38d0be0468dfe Mon Sep 17 00:00:00 2001
From: Franck Bui <fbui@suse.com>
Date: Mon, 9 Feb 2026 18:59:27 +0100
Subject: [PATCH 2/2] Fix media_fs_uuids not being initialized with existing
media at startup
The media_fs_uuids hash table introduced for CD/DVD media change detection has
a bug: it starts empty even when discs are already present in drives at startup.
When Thunar starts with a CD/DVD already inserted, the first "change" uevent
finds no entry in media_fs_uuids (returns NULL), causing
has_cdrom_media_changed() to incorrectly report the media as "changed" since
g_strcmp0(NULL, current_uuid) != 0.
This triggers unwanted auto-mount and volume manager actions for media that was
present all along, defeating the purpose of the change detection mechanism.
Fix by adding thunar_application_initialize_media_fs_uuids() to scan existing
CD/DVD drives at startup and populate the hash table with any media currently
present. Now the first uevent after startup correctly compares against the
actual initial state instead of an empty table.
---
thunar/thunar-application.c | 49 ++++++++++++++++++++++++++++++++++++-
1 file changed, 48 insertions(+), 1 deletion(-)
diff --git a/thunar/thunar-application.c b/thunar/thunar-application.c
index 81ac5589..8ae24f3e 100644
--- a/thunar/thunar-application.c
+++ b/thunar/thunar-application.c
@@ -201,6 +201,8 @@ thunar_application_volman_watch (GPid pid,
gpointer user_data);
static void
thunar_application_volman_watch_destroy (gpointer user_data);
+static void
+thunar_application_initialize_media_fs_uuids (ThunarApplication *application);
#endif
static gboolean
thunar_application_show_progress_dialog_timeout (gpointer user_data);
@@ -408,7 +410,8 @@ thunar_application_startup (GApplication *gapp)
g_signal_connect (application->udev_client, "uevent",
G_CALLBACK (thunar_application_uevent), application);
- application->media_fs_uuids = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
+ /* create and populate the hash table with currently present media */
+ thunar_application_initialize_media_fs_uuids (application);
#endif
thunar_application_dbus_init (application);
@@ -1170,6 +1173,50 @@ thunar_application_uevent (GUdevClient *client,
+static void
+thunar_application_initialize_media_fs_uuids (ThunarApplication *application)
+{
+ GList *devices;
+ GList *lp;
+ GUdevDevice *device;
+ const gchar *sysfs_path;
+ const gchar *media_fs_uuid;
+
+ _thunar_return_if_fail (THUNAR_IS_APPLICATION (application));
+ _thunar_return_if_fail (G_UDEV_IS_CLIENT (application->udev_client));
+ _thunar_return_if_fail (application->media_fs_uuids == NULL);
+
+ application->media_fs_uuids = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
+
+ /* query all block devices from udev */
+ devices = g_udev_client_query_by_subsystem (application->udev_client, "block");
+
+ for (lp = devices; lp != NULL; lp = lp->next)
+ {
+ device = G_UDEV_DEVICE (lp->data);
+
+ /* check if this is a CD/DVD drive with media currently present */
+ if (g_udev_device_get_property_as_boolean (device, "ID_CDROM") &&
+ g_udev_device_get_property_as_boolean (device, "ID_CDROM_MEDIA"))
+ {
+ sysfs_path = g_udev_device_get_sysfs_path (device);
+ media_fs_uuid = g_udev_device_get_property (device, "ID_FS_UUID");
+
+ /* store the filesystem UUID for this device if it has one */
+ if (media_fs_uuid != NULL)
+ {
+ g_hash_table_insert (application->media_fs_uuids,
+ g_strdup (sysfs_path),
+ g_strdup (media_fs_uuid));
+ }
+ }
+ }
+
+ g_list_free_full (devices, g_object_unref);
+}
+
+
+
static gboolean
thunar_application_volman_idle (gpointer user_data)
{
--
2.51.0
